I have a few suggestions for you on things that may bother the cat enough to keep it away. Cats hate the smell of vinegar. Put a dish of vinegar water on the incubator. Or put something on the incubator that doesn't cover the holes but breaks up the cats sleeping area - like a brick maybe. Cats don't like the feel of aluminum foril on their feet. Trying lining the area around the incubator with foil. Set mouse traps, very careful set them upside down around the incubator and when the cat touches them they will snap but as they are upside down they shouldn't catch the kitty and cause pain. You could buy an electric scat mat that you could line the area with - it gives electric shock when the pet walks on it. Most commonly used to train cats to stay off counters, dogs of furniture or pets away from the christmas tree. One of my favorites that I can't seem to find anymore is a motion activated airhorn. It was a small can that when motion activated by the cat getting on the counter would make a terrible airhorn noise. The one I remember was marketed specifically for cats but I can't find it anymore. Maybe they still have motion activated airhorns just not cat specific. Good luck with keeping the cat off of the bator. I have to keep mine in the spare room and keep the door shut.
Have a great day - Deena
Have a great day - Deena